JavaScript on its own is a very powerful language, and you do not need any additional frameworks to create Rich Internet Applications (RIA) that are powered by it. Using JavaScript, however, is not an easy task, primarily due to the complications that arise when trying to provide support for multiple Web browsers. Like HTML and CSS, different browsers have separate implementations of JavaScript, and it can be a nightmare to ensure that your JavaScript code is cross-browser compatible.
This course introduces JavaScript frameworks to reduce the complexity of web development. JavaScript framework or library is a set of utilities and functions that make it much easier to produce cross-browser compatible JavaScript code. Each library is vigorously tested on modern versions of many popular Web browsers, and as such, you can be confident that by using one of these frameworks, that your JavaScript-based RIA will work similarly across different browsers and platforms.
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